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[2.103.239.165]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47d1936d220sm364843305e9.8.2025.12.25.01.29.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Dec 2025 01:29:33 -0800 (PST) Date: Thu, 25 Dec 2025 09:29:27 +0000 From: David Laight To: kernel test robot Cc: LiangCheng Wang , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Thomas Zimmermann Subject: Re: drivers/gpu/drm/tiny/pixpaper.c:579:12: warning: stack frame size (20024) exceeds limit (8192) in 'pixpaper_panel_hw_init' Message-ID: <20251225092927.4925c4d7@pumpkin> In-Reply-To: <202512250610.xyL5clTw-lkp@intel.com> References: <202512250610.xyL5clTw-lkp@intel.com> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; arm-unknown-linux-gnueabihf) Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Thu, 25 Dec 2025 06:46:40 +0800 kernel test robot wrote: > Hi LiangCheng, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: ccd1cdca5cd433c8a5dff78b69a79b31d9b77ee1 > commit: c9e70639f5915f2d084a0126e62fe53a52c29cea drm: tiny: Add support for Mayqueen Pixpaper e-ink panel > date: 4 months ago > config: x86_64-randconfig-013-20251225 (https://download.01.org/0day-ci/archive/20251225/202512250610.xyL5clTw-lkp@intel.com/config) > compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251225/202512250610.xyL5clTw-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-kbuild-all/202512250610.xyL5clTw-lkp@intel.com/ > > All warnings (new ones prefixed by >>): > > >> drivers/gpu/drm/tiny/pixpaper.c:579:12: warning: stack frame size (20024) exceeds limit (8192) in 'pixpaper_panel_hw_init' [-Wframe-larger-than] > 579 | static int pixpaper_panel_hw_init(struct pixpaper_panel *panel) > | ^ > 1 warning generated. > > > vim +/pixpaper_panel_hw_init +579 drivers/gpu/drm/tiny/pixpaper.c > > 578 > > 579 static int pixpaper_panel_hw_init(struct pixpaper_panel *panel) > 580 { > 581 struct pixpaper_error_ctx err = { .errno_code = 0 }; > 582 > 583 gpiod_set_value_cansleep(panel->reset, 0); > 584 msleep(50); > 585 gpiod_set_value_cansleep(panel->reset, 1); > 586 msleep(50); > 587 > 588 pixpaper_wait_for_panel(panel); > 589 > 590 pixpaper_send_cmd(panel, PIXPAPER_CMD_UNKNOWN_4D, &err); > 591 pixpaper_send_data(panel, PIXPAPER_UNKNOWN_4D_CONFIG, &err); Those two functions want marking noinline (all the time). David